Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d80844970aaedc…

MALICIOUS

PDF

126.3 KB Created: 2021-03-23 17:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c0c5e9c81ab3585c3d20f44d0e6a3faa SHA-1: cb50481d3df2bf3d9a8eaef5c53602e6d8336907 SHA-256: a6d80844970aaedc142c1565dae1396bc060b9384d3aa3e121daf904206a13e6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords like 'tv guide windsor tonight' which likely serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=tv+guide+windsor+tonight PDF link annotation
    • https://xepebujusu.weebly.com/uploads/1/3/4/3/134319702/5353186.pdfIn PDF document text
    • http://damvglaz0.xyz/29553172760xrol2.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/51248591962.pdfIn PDF document text
    • http://goodsun.space/7481090903849uld.pdfIn PDF document text
    • https://turexebino.weebly.com/uploads/1/3/4/2/134265835/c1038895b5b50.pdfIn PDF document text
    • http://bovuwitinix.22web.org/latch_acoustic_piano_sheet_music.pdfIn PDF document text
    • https://pabitunevogozut.weebly.com/uploads/1/3/0/7/130776295/tuxixiponi.pdfIn PDF document text
    • http://lubogexu.22web.org/the_divine_comedy_book_set.pdfIn PDF document text
    • https://jeludumekidi.weebly.com/uploads/1/3/2/7/132740852/kivatimuru-danoxo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dadinubu.rf.gd/kaxedutaxod.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/are_marines_tougher_than_navy_seals.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/angamaly_diaries_fight_bgm.pdfIn PDF document text
    • http://xikusaduxofi.atwebpages.com/cerere_demisie_cu_acordul_prilor_2020.pdfIn PDF document text
    • http://vofoxefubi.epizy.com/51464856298.pdfIn PDF document text
    • http://xodepew.epizy.com/dawipudi.pdfIn PDF document text
    • http://jujabezemaluwe.rf.gd/european_guidelines_helicobacter_pylori_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/how_to_save_print_screen_as_on_mac.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B225 4944 bytes
SHA-256: df5f05c7d6238b5feef6d0009438c1bb1b916fd56aeacafbb1c254a9f7c7dcd0
font_01_sfnt_off0001c30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C30C 11956 bytes
SHA-256: 4f5c574eddcb70a5e895013757dc6157da602bee9cb40fe3dc1ebb1a6df6cb2f

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